The detection of ultra-relativistic electrons in low Earth orbit


Speaker: Thanassis Katsiyannis


By combining LYRA and Energetic Particle Telescope (EPT) observations for an overlapping period of time, we identified the detection of highly relativistic electrons with an energy range of 2 to 8 MeV. The observed events are strongly correlated to geo-magnetic activity and appear even during modest disturbances. Additionally, they are well confined geographically within the L=4-6 McIlwain zones, and they show a prominent dawn-dusk asymmetry. A combination of various magnetospheric mechanisms is proposed as a starting point towards a full quantitative explanation.

Date: 6 February 2019



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